1 Ocak 1998 Dergi makalesi Açık Erişim

Pektas, I

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  <identifier identifierType="URL">https://aperta.ulakbim.gov.tr/record/102769</identifier>
  <creators>
    <creator>
      <creatorName>Pektas, I</creatorName>
      <givenName>I</givenName>
      <familyName>Pektas</familyName>
    </creator>
  </creators>
  <titles>
    <title>High-Temperature Degradation Of Reinforced Phenolic Insulator</title>
  </titles>
  <publisher>Aperta</publisher>
  <publicationYear>1998</publicationYear>
  <dates>
    <date dateType="Issued">1998-01-01</date>
  </dates>
  <resourceType resourceTypeGeneral="Text">Journal article</resourceType>
  <alternateIdentifiers>
    <alternateIdentifier alternateIdentifierType="url">https://aperta.ulakbim.gov.tr/record/102769</alternateIdentifier>
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    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsVersionOf">10.81043/aperta.102768</relatedIdentifier>
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    <rights rightsURI="http://www.opendefinition.org/licenses/cc-by">Creative Commons Attribution</rights>
    <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights>
  </rightsList>
  <descriptions>
    <description descriptionType="Abstract">The thermal degradation of graphite and glass-reinforced phenolic insulators have been studied at high temperature by using thermogravimetric (TGA) and differential scanning calorimetric analyses. TGA analysis was carried out in a stream of pure nitrogen over temperature range ambient to 900 degrees C and DSC analysis to 500 degrees C. A heating rate of 10 degrees C/min was used for the determination of degradation temperature and heating rates of 5, 10, 20, 30, and 50 degrees C/min were used for the estimation of degradation temperature (T-max) of the insulator at high-temperature service and calculation of activation. Activation energy of phenolic resin was calculated as 356 kJ mol(-1) using the Ozawa method. T-max was determined as 661 degrees C for 20% conversion. The specific heat capacity of graphite phenolic was found as 970 J kg(-1) K-1 at 100 degrees C. The half-life of the phenolic resin was determined to be approximately 116.2 s at 3500 degrees C. The thermal analysis has been conducted using transient heat conduction and the in-depth temperature distribution was evaluated along the rocket nozzle. The better insulator thickness, including a safety factor for graphite and E-glass-reinforced phenolics were calculated as 3 and 2 mm, respectively. (C) 1998 John Wiley &amp;amp; Sons, Inc.</description>
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